| 1 | + | X | + | 3 2 | = | 1 | + | ( | X | + | 90 | ) | × | 1 100 |
| Left side of the equation = | 5 2 | + | X |
5 2 | + | X | = | 1 | + | ( | X | + | 90 | ) | × | 1 100 |
| Right side of the equation = | 1 | + | X | × | 1 100 | + | 90 | × | 1 100 |
| = | 1 | + | X | × | 1 100 | + | 9 10 |
| = | 19 10 | + | 1 100 | X |
5 2 | + | X | = | 19 10 | + | 1 100 | X |
| X | − | 1 100 | X | = | 19 10 | − | 5 2 |
99 100 | X | = | 19 10 | − | 5 2 |
99 100 | X | = | - | 3 5 |
| X | = | - | 3 5 | ÷ | 99 100 |
| = | - | 3 5 | × | 100 99 |
| = | - | 1 | × | 20 33 |
| X | = | - | 20 33 |
| X | = | - 0.606061 |